Wrench.



K. A. GESTGIFVAR.

WRENCH.

APPLICATION FILED JULY 27. I914.

1 143,1 15. Patented June 15, 1915.

THE NORRIS PETERS CO.. PHOTO'LITHO. WASHINGTUN, Qt

Wrenches,

greater length and KARL AUGUST GESTGrIFVAR, OF BITUMEN, PENNSYLVANIA.

Specification of Letters Patent.

WRENCH.

Patented June 15, 1915.

Application filed July 27, 1914. Serial No. 853,281.

To all whom it may concern:

Be it known that I, KARL A. GESTGIFVAR, a citizen of Finland, residing at Bitumen, Clinton county, Pennsylvania, have invented certain new and useful Improvements in of which the following is a specification.

My invention relates to wrenches, and has particular reference to the type in which the jaws are set by hand or independently of the usual screw control.

The object of the invention is to provide an improved form of construction in this type of wrenches to the ends of attaining strength in the j avs' shanks, and, consequently, better leverage of the wrench handle upon the jaw shanks; of obtaining a greater range of jaw movement in a given width of handle; of obtaining an instantaneous jaw-locking device as remote from the point where the jaws must work as possible; of obtaining a comparatively inexpensive form of construction adapted for low priced wrenches, and such minor advantages as will appear from the detail description hereinafter given.

With this object in view the invention consists in the novel construction, combination and arrangement of parts hereinafter described in detail, illustrated in the accompanying drawing and incorporated in the appended claim.

In the drawing-Figure l is a side elevation of a wrench embodyingmy invention, the one side of the case being removed. Fig. 2 is arsimilar view with the jaws open. Fig. 3 is a section taken on line 33 of Fig. 1, cover or case of handle included. Fig. 4 is a section taken on line H of Fig. 1. Fig. 5 is a perspective view of one section of handle and the jaws and shanks separated.

In the several views 2 represents the flanged portion of the casing or handle provided with a flange 3 the ends of which are at 4 and 5. The casing or handle is completed by a plate or cover 6 which is secured to the section 2 by means of screws such as 7 and 8 that engage threaded holes 9, 10, l1, and 12. The holes 9 and 10 are in rectangular guide lugs 13 and 14 which 'may be formed integral with the case portion 2.

The jaws of the wrench are represented as 15 and 16, the former having as an integral part thereof a web 17 which is extended rearwardly into a shank 18 having a rectangular slot 19 which extends into the web portion 17. Said slot is engaged by the lug 13. The jaw 15 moves only longitudinally and its shank is supported at one edge by the flange 3 and has a lug 20 which extends to the other edge of the handle to receive support there from the flange 3. In the rear of the lug 20 isa further extension 21 which extends the length of the shank or support for the jaw 15. The jaw 16 has a web portion 22 which engages a slot 23 in the rear end of the jaw 15 at the side of its web portion 17. The jaw 16 has a similar slot 24 engaged by the web 17 of the opposite jaw. The jaw 16 has a diagonally extending web 25 in which is a slot 26 that is engaged by the lug 14 and rearwardly said web 25 is extended in a shank 27 which has a raised portion 28 with a slot 29 therein. The slot 29 is engaged by a rib or raised portion 30 which is substantially an integral part of the section of easing 2. This rib, like the slot 29, extends diagonally from edge or side to edge or side of the handle or casing, .as

shown. The rear end of the shank 27 is beveled and is provided with teeth or notches 31 which are engaged by teeth or notches 32 on a movable bar 33. This bar is actuated by a lever 34: which is pivoted at 35 and pivotally connected by means of a link 36 with the bar 33. On the'lever is a nose, or cam portion, 37 which assists the link 36 in moving the bar 33 into and out of engagement with the teeth or notches 31. The lever 34 extends out of the handle through a slot 38 cut in the rib 3. The web of the jaw 16 overlies the web of the jaw 15, and hence a filler or raised portion 39 is provided on the casing section 2 on which the web 25 rests, said raised portion being in thickness substantially the same as the thickness of the web 17.

It will be seen from the above described construction that the jaws have shanks which are not limited in length to one end of the handle and that only one jaw moves laterally relative to the handle. \Vhere there is small turning movement, or place for such movement, this wrench may be used where wrenches with equally moving jaws could not be conveniently used, by simply turning over the wrench and reengaging its jaws with the nut after each turn. The locking bar 33, it will be seen, holds the jaws locked against relative movement in either direction, and it is a positive look as distinguished from friction locking. Aside claim as new and desire to from the simple parts of the lever 84c, bar 33 and their link connection, the wrench may" consist of only four members,'narnely the two casing sections and the two jaws, the lugs being parts integral with the casing or handle.

Having thus described my invention, I secure by Letters Patent" Ihe combination of the casing consisting of sections 2 and 6, the section 2 having the flange 3, with the jaws 15 and 16 projecting beyond the forward end of the handle, said jaws having the recesses 28 and 24: engaging said webs to prevent relative displacement of said jaws, said jaw webs having shank extensions 18 and 27 which project a substantial distance Copies of this patent may be obtained for five cents each, by addressing the Commissioner of IE'a'tezits webs 17, 22 and 25 and the intothe handle,the lug 28 having the groove 29 and the casing rib 3O engaging said groove, the toothed bar 33 adapted to engage a toothed rear end of the shank 27, the lever 3a, and the connections between said lever and-said bar 33 Wherebysaid bar is movable by-said lever, said lever having a cam portion 37 which assists in the operation of said bar and having a portion thereof projecting out of the rear end of said handle. 7

In testimonywhereof I'have hereunto set my hand in the presence of two subscribing witnesses; V s V K. AUGUST GESTGIFVAR.

WVitnesses:

OSCAR OARLSQN, V KARL ANDERSON.

, Washington, D. G. 

